export async function navitem(): Promise<Blob> {
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  ];
  const canvas = document.createElement("canvas");
  const w = bits[0].length;
  const h = bits.length;
  canvas.width = w;
  canvas.height = h;
  const ctx = canvas.getContext("2d");
  ctx.fillStyle = "white";
  ctx.fillRect(0, 0, w, h);

  const imageData = ctx.getImageData(0, 0, w, h);
  const data = imageData.data;
  for (var y = 0; y < h; y++) {
    var s = bits[y];
    for (var x = 0; x < w; x++) {
      var b = parseInt(`0x${s[x]}${s[x]}`);
      data[(y * w + x) * 4 + 3] = b;
    }
  }

  // for (var i = 0; i < data.length; i += 4) {
  //     data[i + 3] = data[i + 0];
  // }
  ctx.putImageData(imageData, 0, 0);

  return new Promise((resolve, reject) => {
    canvas.toBlob((blob) => resolve(blob));
  });
}
